import Foundation

#if canImport(ActivityKit) && os(iOS)
import ActivityKit

enum ApprovalActivityController {
    static func sync(requests: [ApprovalRequest], profile: MemberProfile) async {
        let pendingRequest = requests.first(where: { $0.status == .pending })

        guard let pendingRequest else {
            await endAll()
            return
        }

        let payload = pendingRequest.activityPayload(handle: profile.handle)
        let contentState = ApprovalActivityAttributes.ContentState(
            requestID: payload.requestID,
            title: payload.title,
            appName: payload.appName,
            source: payload.source,
            handle: payload.handle,
            location: payload.location
        )
        let content = ActivityContent(state: contentState, staleDate: pendingRequest.activityExpiryDate)

        if let currentActivity = Activity<ApprovalActivityAttributes>.activities.first(where: { $0.attributes.requestID == payload.requestID }) {
            await currentActivity.update(content)
        } else {
            do {
                _ = try Activity.request(
                    attributes: ApprovalActivityAttributes(requestID: payload.requestID, createdAt: payload.createdAt),
                    content: content
                )
            } catch {
            }
        }

        for activity in Activity<ApprovalActivityAttributes>.activities where activity.attributes.requestID != payload.requestID {
            await activity.end(nil, dismissalPolicy: .immediate)
        }
    }

    static func sync(requests: [ApprovalRequest], profile: MemberProfile?) async {
        guard let profile else {
            await endAll()
            return
        }

        await sync(requests: requests, profile: profile)
    }

    static func endAll() async {
        for activity in Activity<ApprovalActivityAttributes>.activities {
            await activity.end(nil, dismissalPolicy: .immediate)
        }
    }
}
#else
enum ApprovalActivityController {
    static func sync(requests: [ApprovalRequest], profile: MemberProfile?) async {}
    static func endAll() async {}
}
#endif